LI-7000 Software and Data Output

Software

Simple Windows® Interface Software provides easy access to all instrument functions, including calibration, data output options, and the display of output variables.  The main window allows for viewing real-time data in text or graphical form.

Any software communications program capable of sending command strings and receiving ASCII data can be used to communicate with the LI-7000.  All instrument functions can also be accessed at the LI-7000 front panel. 

Custom displays with up to 8 variables, updated in real time, are available on the LCD screen display.

Data Output

Screen Display

The LI-7000 has a large 40 character x 8 line backlit LCD that displays real-time measured values.  The variables to be displayed are chosen from a list, and as many as 8 can be viewed on a single display screen.  Different screens can be programmed and accessed quickly by pressing a single numeric key on the keypad.  More than 40 different measured and diagnostic variables, including CO₂ and H₂O measurements as mole fraction, partial pressure, dew point (H₂O), or raw absorptance values are available for display. A real-time graphics mode allows up to three variables to be charted at a time. The user can toggle between graphic and numeric displays.

Measured variables can be automatically integrated using built-in integration functions.

Analog Output

The LI-7000 has four fully configurable digital-to-analog converters (DACs), which are updated at 600 Hz.  The output signals are directly proportional to gas concentration or other meaningful units.

Serial/USB Output

Both RS-232 and USB interfaces are provided for output to a computer.  Data can be output at rates of up to 50 Hz.